: Once open, look for a readme.txt or manifest file within the folder, which usually contains a version history or description of the "HL_01_20" build.
: Right-click HL_01_20.7z , hover over "7-Zip," and select "Extract to 'HL_01_20'" to see the internal files without cluttering your desktop. HL_01_20.7z
“With the free download of 7-Zip you get a classic of the pack programs. It has a high compression rate in 7z, ZIP and GZIP format.” YouTube · ProgrammingKnowledge2 · 4 years ago : Once open, look for a readme